VS
Name
—
Ca(Fe²⁺,Mg)(CO₃)₂
Formula
—
Mineral Species
Entry type
—
Carbonates
Chemical class
—
Hexagonal
Crystal system
—
3.5–4
Mohs hardness
—
2.93–3.1
Specific gravity
—
White
Streak
—
Vitreous to pearly
Luster
—
On {1011}, perfect
Cleavage
—
R-3
Space group
—
Calcite-Dolomite
Structural group
—
Ank · Grandfathered
IMA
—
1825
Named in
—
Brown, yellow, white; colorless in transmitted light
Typical colors
—
Ca · Fe · Mg · C · O
Elements
—